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Bridgeport stands as a legendary name in the realm of vertical milling machines and machining centers, boasting a long standing legacy that dates back to 1938 under the name of Bridgeport Machines Inc.. Originally sold in 1938 to Textron Inc., this iconic brand embarked on a new chapter when it joined forces with Hardinge, Inc. in 2004.
A 3-axis clone of a Bridgeport -style vertical milling machine. Milling is the process of machining using rotary cutters to remove material [ 1 ] by advancing a cutter into a workpiece. This may be done by varying directions [ 2 ] on one or several axes, cutter head speed, and pressure. [ 3 ] Milling covers a wide variety of different ...
The machine taper is a simple, low-cost, highly repeatable, and versatile tool mounting system. It provides indexability, as tools can be quickly changed but are precisely located both concentrically and axially by the taper. It also allows high power transmission across the interface, which is needed for milling.
Indexing head. Indexing head and tailstock set up on a milling machine's table. An indexing head, also known as a dividing head or spiral head, [1] is a specialized tool that allows a workpiece to be circularly indexed; that is, easily and precisely rotated to preset angles or circular divisions. Indexing heads are usually used on the tables of ...
Magnus Wahlström. A vertical mill of the form factor developed and made famous by Bridgeport Machines Inc. The head is mounted on the ram by joints that allow it to swivel in two directions. The ram can slide back and forth on the turret, which can swivel on the column. The table sits on the knee, and it can move horizontally in the X and Y axes.
Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.
A rotary table can be used: To machine spanner flats on a bolt; To drill equidistant holes on a circular flange; To cut a round piece with a protruding tang; To create large-diameter holes, via milling in a circular toolpath, on small milling machines that don't have the power to drive large twist drills (>0.500"/>13 mm) To mill helixes
For excavating machines, see Directional boring and Tunnel boring machine. A horizontal boring machine or horizontal boring mill is a machine tool which bores holes in a horizontal direction. There are three main types — table, planer and floor. [1] The table type is the most common and, as it is the most versatile, it is also known as the ...